I am having some trouble with CM 1.06 on Windows 8 Pro 64bit and Photoshop CS6, both 64bit and 32bit versions.

What happens is that whilst processing CM will cause CS6 to crash with an "Integer (zero-)divide error". This happens nearly every time I use Contrast Master, but it is unpredictable. I can't find a specific set of setting that cause the problem, it just crashes without warning, but other times it runs fine. Very frustrating.